
<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>
      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">
        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar" />
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
        </el-button>
        <!--
        v-show：是否显示上传组件
        :key：类似于id，如果一个页面多个图片上传控件，可以做区分
        :url：后台上传的url地址
        @close：关闭上传组件
        @crop-upload-success：上传成功后的回调 -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/oss/file/upload'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>
      </el-form-item>
      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
  import ImageCropper from '@/components/ImageCropper'
  import PanThumb from '@/components/PanThumb'
  import teacher from '../../../api/edu/teacher'
  export default {
    components: { ImageCropper, PanThumb },
    name: 'add',
    data(){
      return{
        imagecropperShow:false,
        imagecropperKey:0, //key值
        BASE_API:process.env.BASE_API, //主机地址
        saveBtnDisabled:false,
        teacher:{} //可以把头像设置成默认值
      }
    },
    created() {
      this.init()
    },
    watch: {
      $route(to, from) { //路由发生改变执行
        this.init()
      }
    },
    methods:{
      close(){
        //关闭弹框
        this.imagecropperShow=false
        //上传组件初始化
        this.imagecropperKey=this.imagecropperKey+1
      },
      cropSuccess(data){
        //上传成功
        this.teacher.avatar=data;
      },
      getInfo(id){
        teacher.getTeacher(id).then(res=>{
          this.teacher=res.data
        })
      },
      init(){
        var id=this.$route.params.id
        if (id!=null){
          this.getInfo(id)
        }else {
          this.teacher={}
        }
      },
      saveOrUpdate(){
        //根据teacher对象判断 添加还是修改
        if (this.teacher.id!=null){
          //修改
          this.updateTeacher()
        }else {
          this.saveTeacher()
        }
      },
      saveTeacher(){
        teacher.addTeacher(this.teacher).then(res=>{//添加成功
          //提示信息
          this.$message({
            type: 'success',
            message: '添加成功!'
          })
          //回到列表中去
          this.$router.push({ path: '/teacher/list' })
        })
      },
      updateTeacher(){
        teacher.updateTeacher(this.teacher).then(res=>{//添加成功
          //提示信息
          this.$message({
            type: 'success',
            message: '修改成功!'
          })
          //回到列表中去
          this.$router.push({ path: '/teacher/list' })
        })
      }
    }
  }
</script>

<style scoped>

</style>
